Deck 12: Manufacturing Processes: Wood Moisture, Alloyed Cast Iron, Cutting Tools, Welding

Question 1

High helix drills are used for deep hole drilling in

A)Aluminium
B)Plastics
C)Rubber (hard)
D)Marble
E)Bakelite

Answer 1

Aluminium

Question 2

Choose incorrect statement. With increasing cutting speed

A)machining cost decreases
B)tool cost increases
C)total cost decreases
D)None of the above
E)Parting off

Answer 2

total cost decreases

Question 3

Panes are used

A)Make the timber surfaces uniform and smooth
B)Making holes in the Timber piece
C)Chamfering the edges
D)Parting off
E)Measure the dimensions

Answer 3

Make the timber surfaces uniform and smooth

Question 4

The main constituent of moulding sand is

A)Hydrocarbons
B)Clay
C)Silica
D)Graphite
E)Carbon

Question 5

An accurate lathe in India is identified as

A)Mark I
B)Grade I
C)Precision I
D)Agmark I
E)Accurate I

Question 6

Indexing for 107 divisions can be done by

A)Angular indexing
B)Simple indexing
C)Differential indexing
D)Compound indexing
E)Compound differential indexing

Question 7

Which of the following process provides continuous welds between two sheets?

A)Projection welding
B)Spot welding
C)Seam welding
D)All of the above
E)Parting off

Question 8

In thermit welding, heat is generated by

A)Combustion of gases
B)Electric arc
C)Reaction of oxygen with metal
D)Chemical reaction involving finely divided aluminium and iron oxide
E)None of the above

Question 9

The common ratio for geometrical speeds in geometrical progression lies between

A)2.0 to 5.0
B)5.0 to 10.0
C)1.0 to 2.0
D)0.1 to 0.5
E)0.5 to 0.9

Question 10

Wipping is the process of

A)Cleaning the welded surface after the welding operation is over
B)Applying flux during welding process
C)Connecting load pipes by soldering alloy
D)Low temperature welding
E)None of the above

Question 11

The term CLA (Centre Line Average) is used in connection with

A)Surface hardness
B)Stresses in a component
C)Average speed of a gear
D)Surface finish
E)Sharpness of a cutting tool

Question 12

A piercing operation in which the entire contour is not cut, is known as

A)lancing
B)Parting off
C)notching
D)broaching
E)bumishing

Question 13

Which variety of copper has the highest purity?

A)Best select copper
B)Parting off
C)High conductivity copper
D)Arsenical copper
E)Deoxidised copper

Question 14

Magna flux is

A)An instrument using ultrasonic techniques for crack detection
B)An instrument used for precision measurements using magnetism and flux density
C)An instrument used for inspection of weldings
D)A non-destructive inspection technique that makes use of magnetic field and magnetic particles to locate flaw in materials
E)Intensity of X-rays required corresponding to thickness of a job for determination of defects.

Question 15

A mandrel is

A)Auxiliary chuck used on lathe for holding small loads
B)None of above
C)A tapered gauge used for inspection of tapered holes
D)Is used in lathe work to hold castings
E)A slightly tapered hardened steel shaft that supports works which cannot be supported otherwise

Question 16

During soldering operation, the main function of solder iron is to

A)Heat the metals to be jointed
B)Heat the solder
C)Heat the flux
D)Remove impurities
E)All of the above

Question 17

Dielectric is essentially required in

A)CLM process
B)PMF process
C)EMP process
D)EDM process
E)ECM process

Question 18

Core chaplet is

A)used to provide a supprt to the core
B)a surface coating on core so that core material does not fuse with the casting
C)Parting off
D)a core dressing operation
E)used to make core surface smooth

Question 19

Drilling operation is an example of

A)Multipoint cutting
B)Simple cutting
C)Oblique cutting
D)Orthogonal cutting
E)None of the above

Question 20

While machining a brass casting on a lathe, the type of chuck used is

A)Face plate
B)Collect chuck
C)Four jaw chuck
D)Three jaw chuck
E)Magnetic chuck

Question 21

For making complicated contours on carbide tools, which of the following process is preferred?

A)Electro chemical milling
B)Laser machining
C)Plasma arc machining
D)Electro discharge machining
E)Diamond tool machining

Question 22

For the same capacity which of the following process has the highest capital cost?

A)Laser beam machining
B)Electro chemical machining
C)Electro discharge machining
D)Abrasive jet machining
E)Plasma arc machining

Question 23

An ideal tool material is the one which

A)has very long life
B)has same life at all cutting speeds
C)produces no heat during cutting
D)None of the above
E)Parting off

Question 24

A hot chisel is one which is

A)Spherical surfaces
B)None of these
C)Used to cut cold materials
D)Used to cut red hot materials
E)Red hot

Question 25

Chisels used for metal cutting are

A)Hardened
B)Annealed
C)Hardened and tempered
D)Annealed, hardened and tempered
E)None of the above

Question 26

Permissible percentage of moisture in dry woods for pattern making is

A)Upto 25 percent
B)1 - 2 percent
C)Upto 15 percent
D)2 - 5 percent
E)Zero percent

Question 27

When silicon is added in the cast iron 13-17 percent is given an alloy which is

A)It is not possible to have such high percentage of silicon
B)Very soft
C)Easily machinable
D)Acid and corrosion resistant
E)Powder casted

Question 28

Which of the following statements correct?

A)Rockwell scale B in used for hard metals
B)Rockwell scale C is used for hard metals
C)Rockwell scale C is used for soft metals
D)Rockwell scale A is used for hard metals
E)None of the above

Question 29

The back rake angle of HSS single point cutting too will be zero while machining

A)Hard materials
B)Cast iron with high carbon percentage
C)Mild steel without collant
D)Brass
E)Brittle materials

Question 30

Which of the following is located within the bolster?

A)Cushion
B)Ram
C)Bed plate
D)All of the above
E)Parting off

Question 31

Which of the following is not a fine finishing operation?

A)Grinding
B)Honing
C)Buffing
D)Lapping
E)Tumbling

Question 32

Electronic components are often joined by

A)Sport welding
B)Seam welding
C)Brazing
D)Adhesive
E)Soldering

Question 33

Two 12 mm plates are to are welded with the help of a 8 gauge electrode. What will be the current requirement

A)75 amps
B)100 amps
C)125 amps
D)130 amps
E)150 amps

Question 34

In which type of welding molten metal is poured for joining the metals

A)Gas welding
B)Arc welding
C)MIG
D)Thermit welding
E)TIG

Question 35

The tool signature comprises

A)6 elements
B)7 elements
C)5 elements
D)8 elements
E)9 elements

Question 36

Gear cutters are specified by

A)cutter number
B)cutter diameter
C)no. of teeth
D)Any of the above
E)Parting off

Question 37

While specifying a grinding wheel, which of the following is the optional specification?

A)Structure
B)Gram size
C)Grade
D)Type of bond
E)Parting off

Question 38

The value of coefficient of friction expected in case of brake lining of steel wheel drum is

A)0.1 to 0.3
B)1
C)0.1
D)0.8 to 0.95
E)0.4 to 0.5

Question 39

Steady rest is

A)Used during thready cutting only
B)Used when a lathe is not provided with foundations
C)Used while turning unsymmetrical objects
D)An additional support provided for long jobs
E)Used when a lathe is subject to vibrations

Question 40

Sintered tungsten carbides can be machined by

A)Electro machining process
B)Explosive forming
C)Grinding only
D)Diamond tools only
E)Conventional processes

Question 41

The major function performed by information handling system is

A)Automatic measuring
B)Automatic logging
C)Alarm monitoring
D)Data and alarm scanning
E)All of the above

Question 42

Carbon content of grey iron is generally

A)1 - 2 percent
B)3-3.5 percent
C)2.5-3 percent
D)4.5 percent
E)2-2.5 percent

Question 43

The clearance between the tips of a spark plug is checked by

A)Vernier caliper
B)Wire gauge
C)Feeler gauge
D)Delatometer
E)None of the above

Question 44

Tumbling is done to

A)To plate the surface
B)Clean the surface of small parts
C)To break the material into pieces
D)Stress relieve the components
E)Get surface finish

Question 45

Which of the following material is cut at the lowest cutting speed?

A)Aluminium
B)Brass
C)Mild steel
D)Copper
E)High carbon steel

Question 46

The included angle of a lathe centre is generally

A)45°
B)30°
C)60°
D)22
E)15°

Question 47

Which one of the following materials will have highest cutting speed?

A)Bronze
B)Aluminium
C)Brass
D)Cast iron
E)Tool steel

Question 48

Hack-saw blades having the number of teeth as given below are available. Which one would you chose for cutting brass

A)18 teeth per inch
B)14 teeth per inch
C)31 teeth per inch
D)40 teeth per inch
E)24 teeth per inch

Question 49

Gang milling is

A)Process in which two or more cutters are used simultangeously
B)High speed milling
C)Milling operation combined with turning
D)Process of cutting gears
E)Milling process for generating hexagonal surfaces

Question 50

Which machine can be used for grinding the ball bearing outer races

A)Surface grinding machine
B)Magnetic chuck grinding machine
C)Universal grinding machine
D)Centreless grinding machine
E)Cylindrical grinding machine

Question 51

Which one of the following methods be used for turning internal tapers only?

A)Taper attachment
B)Reamer
C)Form tool
D)Compound rest
E)Tailstock offset

Question 52

Folding process of edges of the sheet metal is termed as

A)Bending
B)Seaming
C)Hemming
D)Parting off

Question 53

In which operation on a work piece on lathe the spindle speed with be least?

A)Plain turning
B)Thread cutting
C)Taper turning
D)Finishing
E)Parting off

Question 54

Specific temperature for the international Prototype metre is

A)Atmospheric
B)Melting point of ice
C)0°F
D)0°K
E)0°C

Question 55

The speed of grinding wheel is limited by

A)type of bond
B)grinding operation
C)rigidity of grinding machine
D)All of the above
E)Parting off

Question 56

Which of the following is not a shearing process?

A)Notching
B)Perforating
C)Lancing
D)Blanking
E)Embossing

Question 57

For which of the following material TIG welding is preferred?

A)Gold
B)Stainless steel
C)Mild steel
D)Silver
E)Aluminium

Question 58

Taper gererally used in lathes now-a-days is

A)Jarno
B)Morse
C)Brown and sharpe
D)None of above
E)Parkinson

Question 59

Point angle of 90° is used on drills for drilling on

A)Parting off
B)brass
C)bakelite
D)very hard materials
E)aluminium

Question 60

In which of the following process hydraulic fluid acts as transfer media?

A)Ultrasonic machining
B)Electron beam machining
C)Water jet machining
D)Iron beam machining
E)Electro discharge machining

Question 61

The pouring temperature for grey cast iron is

A)2350°C
B)1655°C
C)1850°C
D)1400°C
E)1000°C

Question 62

The surface accuracy of slip gauges is of the order of

A)0.02
B)0.0002
C)0.002
D)0.2
E)0.00002

Question 63

Inside and outside diameters of a thin tube are to be measured. Only one of the following tools is to be selected. Which one would you choose?

A)Outside caliper
B)Odd-leg caliper
C)Inside caliper
D)Trammel
E)Vernier caliper

Question 64

The process for producing smooth surfaces by plastically moving away the raised micro-irregularities on the surface and passing it into the microcavities is known as

A)Buffing
B)Super finishing
C)Burnishing
D)Tumbling
E)Polishing

Question 65

In machine tools normally spindle speeds vary in

A)Arithmetical progression
B)Geometrical progression
C)Exponential progression
D)Logarithmic progression
E)None of the above

Question 66

The length of a hacksaw blade is measured from

A)Centre of hole at one end to the centre of hole at the other end
B)None of these
C)The formula L = 16 x width
D)Extreme one to-extreme end
E)1830 rpm

Question 67

The usual ratio of forward and return stroke in shaper is

A)2 ; 3
B)3 ; 2
C)4 ; 3
D)1 ; 2
E)3 ; 4

Question 68

The machining allowance provided on pattern depends on

A)The casting orientation
B)Size and shape of casting
C)Degree of accuracy required
D)All of the above
E)None of above

Question 69

Cutting speed in turning operations is maximum in case of

A)Cast iron
B)Mild steel
C)Aluminium
D)Bronze
E)Brass

Question 70

Which of the following is dead soft steel?

A)Parting off
B)C 45
C)11 Mn 2
D)C 04
E)33 Mo 55.

Question 71

As per ISS a steel specified as T 75 W 18 Co 10 Cr 4V2 will not have (as constituent)

A)Cobalt
B)Chromium
C)Vanadium
D)Electrical stampings
E)Copper

Question 72

The limitation of electronically operated automatic control system is

A)Considerable time lag
B)Poor accuracy
C)Complicated control response
D)It requires eloborate protection in hazardous locations
E)Serious effect of ambient conduction

Question 73

The equal percentage characteristic of a valve is

A)Uniform flow rate
B)Flow rate proportional to valve lift
C)Each increment of plug movement produces a change in flow which is proportional to the amount flowing before the change occurred
D)Percentage increase in flow is equal to the percentage increase in lift
E)The flow rate before the plug movement is equal to the flow rate after the movement

Question 74

Mould washes are used to produce

A)castings with different hardnesses at different locations
B)smooth surface on castings
C)castings with symmetrical sections
D)None of the above
E)Parting off

Question 75

Two 20 mm thick plates are to be gas welded. What size of welding rod should be selected out of the following rods available?

A)6 mm
B)4.5 mm
C)1.5 mm
D)8 mm
E)3 mm